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#17
July 7th 05, 11:46 PM
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"Owen" wrote in message ... On Thu, 7 Jul 2005 11:23:24 -0500, (Richard Harrison) wrote: Owen wrote: "Has anuypne a link to or reference to derivation of the formula?" My 19th edition of the ARRL Antenna Book treats additional power loss due to SWR on page 24-10. Richard, I have an 18th edition, and the formula it gives does not factor in the angle of the reflection, and so is an approximation. I don't know if that applies to the 19th edition. Back to my original post, I was not in search of a formula for an exact solution, nor a reason to want an exact solution, but rather whether anyone has seen the derivation of Michaels formula quoted in QST Nov 97. Thanks for your help. Owen Well, Owen, if you believe the expressions I presented in Reflections 2 are approximate, then why do I get the correct answers? Walt, W2DU |
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